//热门歌单无缝滚动  margin-left = -2032px
// 定时器  10ms
setInterval(function(){
var ulObj = document.querySelector(".hot ul")
var marginleftObj = parseInt(ulObj.style.marginLeft)
// ul 的 margin-left--
marginleftObj--
// 判断 margin-left <= -2032px 就重置为0
if (marginleftObj<=-2032){
    ulObj.style.marginLeft = "0px"
} else {
    ulObj.style.marginLeft = marginleftObj+"px"
}
},10)


